HomeMy WebLinkAbout1997-03-11; City Council; 14088; MODIFICATIONS TO TITLE 18 SECTION 1 AND SECTION 18.04.230 OF THE CARLSBAD MUNICIPAL CODE PROHIBITING WOOD SHAKES AND SHINGLES AS ROOF COVERINGS FOR NEW OR REPLACEMENT ROOFS, 3u
, %Y OF CARLSBAD - AGENR BILL MI
AB# /q,o&?g
CITYMGR 2 COVERINGS FOR NEW OR REPLACEMENT ROOFS DEPT. BLD
PROHIBITING WOOD SHAKES AND SHINGLES AS ROOF
CITY ATTY. C 2 18.04.230 OF THE CARLSBAD MUNICIPAL CODE MTG.3 c I ‘ y 7 -7 MODIFICATIONS TO TITLE 18 SECTION 1 AND SECTION DEPT. HD. 6 TITLE:
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RECOMMENDED ACTION:
It is recommended that the City Council INTRODUCE Ordinance No. ’’ c .3 s8 amendin]
18, Chapter 18.04.230 of the Carlsbad Municipal Code.
ITEM EXPLANATION:
Staff is proposing to modify the City’s adopted Building Code to prohibit Wood Shakes o
Shingle roof coverings for all new buildings and for all buildings re-roofed within the Cit
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As currently adopted, the City’s adopted Building Code requires a minimum Class B rooi
covering for all new roofs and for all re-roofed structures. Class B roof systems allows th,
of treated wood roof coverings. Treated wood roofs are wood shakes or shingles which
been pressure impregnated with proprietary fire retardant products. The roof systems arc
subject to tests prescribed in the Uniform Building Code Standards. The State Building (
requires a minimum ten year durability test.
The State currently has a minimum standard for new construction in California. The Stat
requires a class B system for new structures and for re-roofs of more than 50% in very hi]
hazard severity zones designated by the California Department of Forestry and Fire Prott
standard per adoptive ordinance. State law allows local jurisdictions the authority to rnc
the minimum building standards where reasonably necessary because of local climactic,
geologic, or topographical conditions.
Because of concerns over the performance of treated wood roof systems and the testing
procedures for classifying treated wood roof systems, the City of Los Angeles banned wc
shakes and shingles as a roof covering in 1989. According to Los Angeles,” ... wood shah
shingles are stressed by the fire retardant pressure impregnation process, which includes
temperature kiln-drying process. As a result, in many cases they are split or cracked pric
installation, thereby exposing the interior of the shingle, which may not be treated.”
This ordinance was challenged unsuccessfully in court in 1991, with the court finding iI
“the City Council reasonably concluded that the tests conducted on treated wood shake
shingles were not reliable and could not guarantee that the treated wood shakes and sh
would pose less of a fire hazard than untreated wood shakes and shingles.” During the
action the City of Santa Barbara Fire Marshal testified that the Sea Center Museum in Sa
Barbara, which was roofed with a Class B wood shake roof, did indeed burn “...in mild
weather conditions ...p roducing airborne firebrands that could have ignited other structl
under more adverse conditions.” His observation was that Class B, pressure impregnatt
or within such zones as designated by a local agency, This is Carlsbad’s current minim1
0 will still burn and potentially contribute to the spread of fire. dl 0
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' PAGE 2 OF *GENAL No. 1 L! j OZ~ 0
Staff is proposing to modify the City's adopted Building Code, as allowed by State law, to F
wood shake and shingle roof coverings due to the fact that treated wood roofs are only subjt
ten year weathering test for fire resistivity. The life expectancy of new homes is up to 50 y
more, and there is no substantiating data available to prove that the fire treatment of wo(
products is effective for more than ten years, and the tests performed on the treated wo(
coverings do not simulate actual climactic conditions experienced in Carlsbad.
Additionally, staff finds that Carlsbad has many open space easements deeded in perpetu
areas of protected natural habitats immediately adjacent to developed areas throughout th
Carlsbad has steep canyon terrain, and is subject to hot, dry, high speed Santa Ana wind:
annual basis in excess of the testing limits for treated wood roofs. Additionally the develop
of Carlsbad is adjacent to large areas of brush covered hills where accessibility for fire
equipment and fire prevention measures is limited or impossible.
FISCAL IMPACT:
No fee increases are proposed by this ordinance. The City will enforce this ordinance dl
the course of ordinary business. The consumer has a range of financial choices for repl;
shake roofs both above and below the cost of installing treated wood shakes as noted in
table:
Product Type
square feet.
Cost/Year Expectancy Per 100 Life-cycle Life Approx. Cost Class
AsphaWFiberglass $9.50 20 $190 A
Shingle
AsphaltIFiberglass A
Laminated
Shingle - Heavy
$7.33 30 $220
$8.00 - 50 $400 A Clay Tile
$6.40 50 $320 A Concrete Tile
composite)
fiberkement
$7.33 50 $365 A "Fake Shake" (wood
$1 7.00 20 $340 B Treated Wood Shakes
Survey taken January 1997. Assumes reroof of a 5/12 roof pitch - including removal of old shake, installation
of sheathing, and installation of replacement roofing.
As shown in the table, there is a range of roof material options available from $I 90 - I
100 square feet. Shake roofing is relatively expensive, so the decision to ban wo
should not be a financial burden upon homeowners. They may choose competitive1
options besides wood shakes. Repairs to txisting roofs which do not require a re-roc
may use treated shakes to make such repairs.
EXHIBITS:
I. Ordinance No. NY-3 98'
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ORDINANCE NO. NS - 3 9 8
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY
OF CARLSBAD, AMENDING TITLE 18, SECTION
18.04.230 PROHIBITING WOOD SHAKES AND SHINGLES
AS A ROOF COVERING.
The City Council of the City of Carlsbad, California does ordain as follows:
SECTION 1: WHEREAS, the City of Carlsbad is supplied with water and I
certain areas by other entities. It has been necessary in the past to amend portions of the
Building Code to allocate sewer use (Sections 106.4.1 and 106.4.4). Other City amend
the Uniform Building Code are in reference to fire protection. The City of Carlsbad h
brush covered hillsides and canyons where accessibility for fire fighting equipment
prevention measures is limited or impossible. Carlsbad has many open space easement
in perpetuity and areas of protected natural habitats immediately adjacent to develoF
throughout the city. Carlsbad has steep canyon terrain, and is subject to hot, dry, hi;
Santa Ana winds on an annual basis. This combination of climactic and topographic c(
creates extreme fire danger. The City Council finds that these climatic and top
conditions, and the City’s experience with the Harmony Grove fire of 1996 necessitate
in the Uniform Building Code in conformance with Health and Safety Code Section
Therefore, Chapter 18.04 should now be further amended to alter the Uniform Building
prohibit wood shake and shingle roofs, as well as require prepaid sewer and water
require all other roofs to be fire retardant, and provide more sprinklered buildings.
SECTION 2: That Title 18, Chapter 18.04 of the Carlsbad Municipal Code is
by the amendment of section 18.04.230 to read as follows:
“18.04.230 Section 1501 amended - ScoDe. Section 1501 of the Uniform Build
shall be amended to read:
Roofs and roof structures shall be as specified in this Code and as otherwise re1
this Chapter.
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Roof coverings other than wood shakes and shingles shall be Class A.
Wood Shakes and Shingles of any classification are prohibited as a roof coverin;
new structures and on all replacement roofs.
Roof coverings shall be secured or fastened to the supporting roof construction a
provide weather protection for the building at the roof.
Skylights shall be constructed as required in Chapter 24.
For use of plastics in roofs, see Chapter 26.
For solar energy collectors located above or upon a roof, see Chapter 13 .77
EFFECTIVE DATE: This ordinance shall be effective thirty days after its ac
and the City Clerk shall certify to the adoption of this ordinance and cause it to be pub:
least once in a newspaper of general circulation in the city within fifteen days after its ad(
INTRODUCED AND FIRST READ at a regular meeting of the Carlsbad City
held o the 11th day of March , 1997 and thereafter
PASSED AND ADOPTED at a regular meeting of said City Council held on the
day of , 1997, by the following vote, to wit:
AYES:
NOES:
ABSENT:
ATTEST:
CLAUDE A. LEWIS, Mayor
I
ALETHA L. RAUTENKRANZ, City Clerk
(SEAL)
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MAR. \ I '97 4: \QPM BlJ[Lj"X [NDUSTRY ASSOCIATION R4785 P, 21'2
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BUILDINGINDUSTRY
ASSOCIATION OF
-- SAN DIEGO COUNTY AGENDAKElfa ~ <: .-q&.* * 9-
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VICE PRESlOENT Mark McMlllln McMillln Cotnpar~lea
TREASURER
Mkk Pattlnson
Bar&i American
SECRETARY
Win Seld CoJRlch Communiti~, Inc.
MMEDIATE PAST PRESIDENT
Ian M. Gill Highland Palnmhlp, Inc.
EXECUTIVE VICE PRESIDENT Paul A, Ttyon
CaHfomle BuildIn h-lduaty As8owon
Natkmal Asaodatian
of Home Buiklm
March IO,1997
Mayor Claude Lewis
Councilmembex Ramona Finnila
Councilmember Matt Hall
Councilmember Ann Kulchin
Councilmember Julianne Nygaard
RE: . u 14.088 . . , . m m to Prevent the Use
Qf Wood .
Dear Mayor Lewis and Members of the Council
The Building Industry Association recognizes that wildfires represent a threat
throughout California and in regions such as ours. We also realize that the potential
for loss of property and life is significant, Including the cost to the public for fire
protection and containment. We concur with the need to accommodate the use of
building materials that provide for a greater margin of public safety,
The cost to California home owners of installing fire safe materials represents the
potential for a significant financial burden. We believe this cost must be balanced with the savings in fire suppression. Therefore in recognition of the significant
outlay required to reroof a home and the savings the city of Carlsbad will realize in
providing fire protection services. We respectfully request the city, of Carlsbad
consider reducing or rescinding its fee charged to persons choosing-to reroof their homes to obtain greater fire protection,
Additionally, legislation has been introduced at the state level that recognizes the
fiscal impact of encouraging greater fire safety for home owners. This legislation
seeks to incentivise roof replacements in as fiscally sound approach as possible.
We encourage the City of Carlsbad to explore whatever opportunities may be
availabie to the City to further incentivise this process.
Legislative Advocate